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while the 3/8" x 6" cross-ambient bulb remains virtually unaffected by ambient temperature fluctuations
allowing the duct detector to trigger the annunciator directly
it is specifically optimized for ASCO solenoid valve specifications and dimensions
Use a manometer to verify the inducer is pulling the required WC (Water Column) pressure
Using this on R-22 equipment will result in the system failing to trip at the correct safety thresholds
McDonnell & Miller 159S Controller Els PW 29614 while the 3/8" x 6"The McDonnell & Miller 159S Controller (Part Number 178802) is a specialized combination low water cut off and pump controller designed for heavy duty commercial and industrial steam boiler applications. Operating at a maximum pressure of 150 psi, this unit integrates a float operated mechanism with dual bi metal snap acting switches to ensure precise level management. The configuration features one SPST switch dedicated to pump control and a second